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spring-tools/vscode-extensions/vscode-boot-java/DEVELOPER-NOTES.md
2017-11-24 11:58:12 -08:00

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# Developer notes
## Bulding and Running
This project consists of three pieces:
- a vscode-extension which is a language-server client implemented in TypeScript.
- commons-vscode: a local npm module with some utilities implemented in TypeScript.
- a language server implemented in Java.
To build all these pieces you normally only need to run:
npm install
**However, the first time you build** it might fail trying to
find the `commons-vscode` module on npm central. Once we publish a stable
version of that module on npm central that will no longer be a problem.
Until that time, you can work around this by doing a one time manual
run of the `preinstall` script prior to running `npm install`:
./scripts/preinstall.sh
npm install
Now you can open the client-app in vscode. From the root of this project.
code .
To launch the language server in a vscode runtime, press F5.
## Debugging
### Method 1: attach remote debugger to Language Server
To debug the language server, open `lib/Main.ts` and edit to set the
`DEBUG` option to `true`. When you launch the app next by pressing
`F5` it will launch with debug options being passed to the server JVM.
You can then connect a 'Remote Java' debugger on port 8000.
### Method 2: Launch a 'standalone' Language Server
To debug the language server, open `lib/Main.ts` and edit to set the
`CONNECT_TO_LS` option to `true`. When you launch the app next by pressing
`F5`... When it needs a language server it not launch a process but instead
try to connect to an already running server on port `5007`. It is up to you
to ensure a server is running on that port by launching it beforehand
with a commandline arguments: `-Dstandalone-startup=true`.
## Packaging as a vscode extension
First make sure the stuff is all built locally:
./scripts/preinstall.sh # only needed if this is the first build.
npm install
Then package it:
npm run vsce-package
This produces a `.vsix` file which you can install directly into vscode.